Expired European patentEurope
Process for removing ink from recycled paper
EP 1046744 B1 · Applicant: Kalkfabrik Netstal AG
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 22, 1999 and granted August 11, 2004. A European patent lasts at most 20 years from filing, so its term ended March 22, 2019.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by September 22, 2024.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledMarch 22, 1999
PublishedOctober 25, 2000
GrantedAugust 11, 2004
Term endedMarch 22, 2019
Application numberEP 99105033
Classification (CPC)D21H11/14 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.